Quality Control
To ensure the accuracy and precision of results, the USUAL follows strict quality control/quality assurance guidelines. We are familiar with EPA certification guidelines (although it is cost prohibitive for us to be certified). We participate in several proficiency testing programs including:
- NAPT - North American Proficiency Testing Program for Agricultural Labs (and act as contract lab for program.)
- NAPT PAP - NAPT Performance Assessment Program
- MAP - Manure Analysis Program
- NFTA - National Forage Testing Association (NIR and Wet Chem)
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